Cop retainer for loom shuttles



Oct. 11, 1949. GREEN I COP RETAINER FOR Loom SHUTTLES Filed Jan. 22, 1949 E R 52 .B JWA R V w w w, w Q QM ww m Patented Oct. 11, 1949 UNITED PATENT OFFICE COP RETAIN ERJ'FOR LOOM SHUTTLES Edward:Green,.WestMoorestown, N. J assignor to'Moss Rose Manufacturing Company, Philadelphia, ,Pa., a. corporation of Pennsylvania ApplicatibnflmuaryZZ, 1949,. Serial No. 72 135.

13.:Glaims. 1.

This invention; relates: to. loom.v shuttles and pertains more particularly. toan improved means for regulating and controlling the passage of yarn fromthe. cop carriedclby. the shuttle.

More specifically,.an object of the invention is to provide an. improved device for maintaining the cop under constant and substantially: uniform-pressure within the shuttle so as to insure unwinding of the yarn from the cop and passage thereof from the shuttle at asubstantially constant rate.

Still more specifically theinvention contem-- plates provision of an improved follower operating by inertia when themotion of the shuttle is suddenly" arrested in its passage across the loom to maintain' a" constant pressure against the end of the cop and-tothereby" confine the cop closely in theshuttle until entirely exhausted.

The invention will be: more readily understood by reference to the attached drawings,.wherein:.

Fig. 1 is a' longitudinal sectional View of a shuttle equipped with. a cop follower made in accordance with the invention;

Fig. 2. is an enlarged fragmentary plan. view as viewed from the line 2-2' Fi'g. 1., said figure being partly in section;

Fig. 3 isasectionalview on theline 33 Fig. 2;

Fig. dis a sectional'view on the line 4.-4'Fig.. 2;

Figs. 5 and 6 are opposite face views in-per-- spective of the. cop follower element. or the device; and.

Fig. '7 is aview in; perspectiveof. the ratchet element. of' the device.

With reference to the drawings the shuttle illustrated in. Fig, 1 is.ofgenerally conventional form comprising the usual hollow body member I containing. acopchamber 2 and the conventional resilient cover plate 3' which confines the cop to the chamber. In accordance with conventional practice the side. walls ofthechamber Zare grooved, as indicated at 4," to. more positively secure the cop in position in the chamber.

In accordance with thepresent invention the opposite side walls of the. chamber 2 are. pro*- vided with longitudinal: recessesv orgrooves 5 and 6' respectively, which are designed. for reception of shoes I and B secured at opposite sides of a cop follower element 9. This follower element, which is shaped to fit transversely within the chamber 2, as best shown in Fig. 4, has at the bottom thereof a pair of feet H, H which are rabbeted at their inner edges as indicated at l2, and in assembly these rabbeted recesses I! receive the opposite longitudinal upper edge portions of a ratchet bar l3 which rests inthe bottom of. the chamber 2. In effect the bar I3 constitutes a rail. upon which the follower. 9 is adapted to slide longitudinally of the chamber a 2, the upper part of the follower 9. being guided by the shoes 7 and 8, which slide in the longitudinal grooves and 6. This:- arrangement affords the follower entire freedom of. movement longitudinally within the chamber 2 while main.- taining the follower in upright position in planes substantially normal to the longitudinal center line of the shuttle.

As illustrated in Fig. 'Tthe bar, I3. is provided with a: longitudinal. series of circular: apertures l4 and these apertures are adapted; to. receive the lower end of a pawl element, l5; whichis. sup.- ported on and between thefeet: l.l,. ll of. the follower 9- ona. transverse pivot 16... As shown in Fig. 3, the. pawl, when; in aa normalv vertical position,.abuts a wall ll: of the'follower 9; so that angularmovement of the pawl in acounterclockwise; direction. from this position. is prevented. Thev pawl, however, is free to move angularly about the pivot IS in a clockwise direction. as viewed in Fig. 3. It will be noted alsoby reference to-this figure that the feet H, H' are extended beyond the body ofthe follower S at-the opposite side'from the recess l8-in which the pawl. I5 is mounted. Under these circumstances-it will be apparent that the-pawl l5 in cooperation with the ratchet l3- will effectively prevent movement of the-follower 9 to the left as viewed" in Fig. 3, but will permit movement of the follower minimize the resistance of the pawl IE to such movement the lower extremity of the pawl is beveled; as indicated at. i9; on the side toward which movement of the follower 9' is permitted, said beveled" surface having a camming effect against: the edges of the apertures M which aids.

in the elevation of'the' pawl to clear said aperturesas the follower advances in the chamber. It will be noted. that the pawl l5 has atv its upper end a transverse projection. 21. which. extends beyond the face of the follower 9 and. which facilitates manual elevation. of the. pawl to clear. the ratchet when. it is. desired toreturn the follower to the left end (as viewed in Fig. l) of the chamber 2.

It will be noted with reference particularly to Fig. 4 that the shoe 1 is secured in a recess 22 in the body of the follower 9 by means of a screw 23. The shoe 8 on the other hand is secured in a recess 24 of the follower by means of a scrap inthe opposite direction. To-

25 which passes downwardly from the top of the follower. In assembling the follower in the shuttle the follower may be placed in the chamber 2 in normal position, and the shoes I and 8, after being entered in the grooves 5 and 6, may then be slid into the recesses 22 and 24 at the sides of the follower in which they are normally mounted. The screw 23. may be entered through an aperture 26 in the side wall of the shuttle, said aperture intersecting the slot 5 as illustrated; and the screw 25 may be passed downwardly through the body of the shuttle and through the aperture 21 in that portion of the shoe 8 which occupies the recess 24. No means is provided in the present instance for securing the bar E3 in the bottom of the chamber 2, the ends of this element, however, being in abutment with or closely contiguous to the end walls of the chamber, as shown in Fig. l, and the bar being held in position laterally by the feet H, H of the follower.

I In assembly and as indicated in Fig. 1, the cop 23, shown in broken lines, is inserted in the chamber with one end in abutment with the end wall 29 of the chamber. The opposite end of the cop will be engaged by the follower 9 and the cop will thus be confined within the chamber 2 between the end wall 29 and the follower 9 and at the top by the cover strip 3. The yarn end from the cop passes through an eyelet at in the follower 9 and thence through theshuttle tension (not shown) to and through the eyelet 3| of the shuttle.

The device has certain novel and highly desirable characteristics. It will be noted, for example, that the bar 13 constitutes a rail or track in the bottom of the chamber upon which the follower 9 is supported for movement longitudinally of the chamber; and that the follower is guided also in the side walls of the chamber through the medium of the shoes '5 and 8 and grooves 5 and 6. The bearing of the follower on the bar H3 is a relatively extensive and stable one because of the elongated feet H which slide upon the opposite sides of the bar. Also the bar I3 is free to move laterally in the bottom of the cop chamber so that rigidity in the mounting of the follower is avoided and a certain floating or self-adjusting efiect attained which insures for the follower continuous freedom for longitudinal movement by inertia as the rapid movement of the shuttle in the loom is interrupted at the end of each alternate pass of the shuttle across the loom. At the same time the follower is guided with precision in its normal position and is substantially free from any tendency to skew and bind in the chamber.

The particular form of the ratchet element is of advantage in that the use of the pawl-receiving apertures affords a positive pawl and ratchet operation and a positive and foolproof control of the movement of the follower in the chamber. The device is desirable also because of its relative simplicity and cheapness of production and assembly.

I claim:

1. A loom shuttle having a longitudinal cop chamber, a cop follower, a track on which the follower is supported for movement longitudinally of the chamber, guide means for the follower on F Number 4 the side walls of the chamber, and means for limiting the follower to one direction of longitudinal movement in the chamber.

2. A loom shuttle according to claim 1 wherein the said track is constituted by a longitudinal bar in the bottom of the cop chamber.

3. A loom shuttle according to claim 2 wherein the bar is formed as a ratchet and wherein the follower is provided with a pawl for co-action with said ratchet.

4. A loom shuttle according to claim 1 wherein the said guidemeans consists of a longitudinal groove in each side wall of the chamber, together with shoes projecting from the sides of the follower and slidably fitting within the grooves.

5. A loom shuttle according to claim 4 wherein the shoes are detachably secured to the follower.

6. A loom shuttle according to claim 5 wherein the shoes are of materially greater length than the thickness of the follower and act to preclude angular displacement of the follower from a normal position in a plane at right angles to the longitudinal axis of the shuttle.

'7. A loom shuttle according to claim 1 wherein the follower is provided with elongated feet for slidable engagement with the said track.

8. A loom shuttle according to claim 7 wherein the said track is received in longitudinal recesses in said feet.

9. A loom shuttle according to claim 8 wherein the track consists of an elongated member confined at its opposite ends by the end walls of the chamber and having freedom for movement transversely in the bottom of said chamber.

10. A loom shuttle havin a longitudinal cop chamber, a longitudinal groove in each side wall of said chamber, a cop follower having shoes fitting slidably in the grooves, track means for the follower extending longitudinally of the chamber, and pawl and ratchet means for limiting the follower to one direction of longitudinal movement in the chamber.

11. A loom shuttle according to claim 10 wherein the track means consists of a'longitudinal bar confined against material longitudinal displacement in the bottom of the cop chamber and having freedom for limited transverse movements.

12. A loom shuttle according to claim 11 including means for precluding any substantial relative movement between the track member and the follower in the transverse direction.

13. A loom shuttle according to claim 12 wherein the track member is provided with a longitudinal series of holes and wherein further the follower is provided with a pawl intermediate the said feet for cooperative engagement with said holes.

EDWARD GREEN,

REFERENCES CITED The following references are of record in the file of this patent:

FOREIGN PATENTS Country Date 12,608 Great Britain 1914 74,264 Germany Apr. 3, 1894 

